<template>
    <div class="app-container">
        <!--
        1、顶部是header区域
        2、中间路由router-view区域
        3、底部Tabber区域
        -->
        <!--顶部Header区域-->
        <mt-header fixed title="黑马程序猿">
            <span slot="left" @click="goBack()" v-show="flag">
                <mt-button icon="back">返回</mt-button>
            </span>
        </mt-header>


        <!--中间路由router-view区域-->
        <transition>
            <router-view></router-view>
        </transition>


        <!--底部Tabber区域-->
        <nav class="mui-bar mui-bar-tab">
            <router-link class="mui-tab-item-llb" to="/home">
                <span class="mui-icon mui-icon-home"></span>
                <span class="mui-tab-label">首页</span>
            </router-link>
            <router-link class="mui-tab-item-llb" to="/member">
                <span class="mui-icon mui-icon-contact"></span>
                <span class="mui-tab-label">会员</span>
            </router-link>
            <router-link class="mui-tab-item-llb" to="shopcar">
                <span class="mui-icon mui-icon-extra mui-icon-extra-cart">
                    <span class="mui-badge" id="badge">{{$store.getters.getAllcount}}</span>
                </span>
                <span class="mui-tab-label">购物车</span>
            </router-link>
            <router-link class="mui-tab-item-llb" to="/search">
                <span class="mui-icon mui-icon-search"></span>
                <span class="mui-tab-label">搜索</span>
            </router-link>
        </nav>


    </div>
</template>

<script>
  export default {
      data(){
          return{
              flag:false
          }
      },
      created(){
          this.flag = this.$route.path === "/home" ? false : true;
      },
      methods:{
        goBack(){
            //点击后退
            this.$router.go(-1);
        }
      },
      watch:{
          '$route.path':function (newVal) {
              if(newVal == "/home"){
                  this.flag = false;
              }else{
                  this.flag = true;
              }
          }
      }
  }
</script>
<style lang="scss" scoped>

    .mint-header{
        z-index: 99;
    }

.app-container{
    padding-top:40px;
    padding-bottom: 50px;
    overflow-x:hidden;
}

    .v-enter{
        opacity:0;
        transform:translateX(100%);
       // position:absolute;
    }
.v-leave-to{
    opacity:0;
    transform:translateX(-100%);
    position: absolute;
    /*
    防止前一页往左，后一页往右的效果，用这种方式可以解决
    */
}

    .v-enter-active,.v-leave-active{
        transition:all 0.5s ease;
    }


    //改类名，解决tabber点击无法切换的问题
    .mui-bar-tab .mui-tab-item-llb .mui-active{
        color:#007aff;
    }
    .mui-bar-tab .mui-tab-item-llb{
        display: table-cell;
        overflow:hidden;
        width: 1%;
        height: 50px;
        text-align: center;
        vertical-align: middle;
        white-space: nowrap;
        text-overflow: ellipsis;
        color:#929292;
    }
    .mui-bar-tab .mui-tab-item .mui-icon{
        top: 3px;
        width: 24px;
        height: 24px;
        padding-top: 0;
        padding-bottom: 0;
    }
    .mui-bar-tab .mui-tab-item-llb .mui-icon~ .mui-tab-label{
        font-size:11px;
        display:block;
        overflow:hidden;
        text-overflow: ellipsis;
    }
</style>